%0 Journal Article %1 Lehners2009 %A Lehners, Jean-Luc %A Steinhardt, Paul J. %A Turok, Neil %D 2009 %K alternative cosmology phoenix %T The Return of the Phoenix Universe %U http://arxiv.org/abs/0910.0834 %X Georges Lemaitre introduced the term "phoenix universe" to describe an oscillatory cosmology with alternating periods of gravitational collapse and expansion. This model is ruled out observationally because it requires a supercritical mass density and cannot accommodate dark energy. However, a new cyclic theory of the universe has been proposed that evades these problems. In a recent elaboration of this picture, almost the entire universe observed today is fated to become entrapped inside black holes, but a tiny region will emerge from these ashes like a phoenix to form an even larger smooth, flat universe filled with galaxies, stars, planets, and, presumably, life. Survival depends crucially on dark energy and suggests a reason why its density is small and positive today.

@article{Lehners2009, abstract = { Georges Lemaitre introduced the term "phoenix universe" to describe an oscillatory cosmology with alternating periods of gravitational collapse and expansion. This model is ruled out observationally because it requires a supercritical mass density and cannot accommodate dark energy. However, a new cyclic theory of the universe has been proposed that evades these problems. In a recent elaboration of this picture, almost the entire universe observed today is fated to become entrapped inside black holes, but a tiny region will emerge from these ashes like a phoenix to form an even larger smooth, flat universe filled with galaxies, stars, planets, and, presumably, life. Survival depends crucially on dark energy and suggests a reason why its density is small and positive today. }, added-at = {2009-10-06T15:42:18.000+0200}, author = {Lehners, Jean-Luc and Steinhardt, Paul J. and Turok, Neil}, biburl = {https://www.bibsonomy.org/bibtex/2fa653306ab8fb2ee7046c7ef35564ca4/jpschaar}, description = {The Return of the Phoenix Universe}, interhash = {99db9b0e5cf2cbc2507cd69c8c589132}, intrahash = {fa653306ab8fb2ee7046c7ef35564ca4}, keywords = {alternative cosmology phoenix}, note = {cite arxiv:0910.0834 Comment: 5 pages, Honorable Mention at the 2009 Gravity Research Foundation essay competition}, timestamp = {2009-10-06T15:42:18.000+0200}, title = {The Return of the Phoenix Universe}, url = {http://arxiv.org/abs/0910.0834}, year = 2009 }